Spark arrestor comparison

I have a 98 YZ400f and need a spark arrestor. My budget Is minimal it seems my choices are an end cap with a insert to silence it, or a FMF Q series pipe. Can anybody let me know if the silencer insert works well, and how much power does it rob and is there re-jetting required? And does the "Q" pipe work well and really give more power than stock, at the same time make less noise? And is there re-jetting?

I have a 98 YZ400f and need a spark arrestor. My budget Is minimal it seems my choices are an end cap with a insert to silence it, or a FMF Q series pipe. Can anybody let me know if the silencer insert works well, and how much power does it rob and is there re-jetting required? And does the "Q" pipe work well and really give more power than stock, at the same time make less noise? And is there re-jetting?

I have a pmb endcape on my 426 and my brother has a q on his bike. You have to rejet for the q but there is a noticeable power gain. It is still louder than my pmb with quiet insert, but it is still legal. The pmb requires no jet changes and personally I felt no power loss. Most of that feeling comes from less noise, but without a dyno it is very minute. It just depends on what you want and how much $ you have to spend. They are both great products.

I have a pmb endcape on my 426 and my brother has a q on his bike. You have to rejet for the q but there is a noticeable power gain. It is still louder than my pmb with quiet insert, but it is still legal. The pmb requires no jet changes and personally I felt no power loss. Most of that feeling comes from less noise, but without a dyno it is very minute. It just depends on what you want and how much $ you have to spend. They are both great products.

Thank you. how long did it take to install?

Thank you. how long did it take to install?

they both take about a half hour to install. The Q will take a bit more including jetting though.

I have the stock exhaust with a gyt-r silencer.....works well and no noticeable power loss

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